Finding the Fourth Proportional to 3,704.12, 5,111.52 and 2,131.88

Step by Step Solution

1. Step 1: Write the proportion equation
   3,704.12 : 5,111.52 = 2,131.88 : x
2. Step 2: Convert to fraction form
   3,704.12/5,111.52 = 2,131.88/x
3. Step 3: Cross multiply
   3,704.12x = 5,111.52 × 2,131.88
4. Step 4: Simplify right side
   3,704.12x = 10,897,147.26
5. Step 5: Solve for x
   x = 10,897,147.26/3,704.12
6. Step 6: Final answer
   x = 2,941.90